Add build rules to simplify platform-specific Makefiles.

- fw/common/Makefile.common: integrated object file specific build rules
  that used to live in fw/boot/
- fw/common/Makefile.common: added section titles
- fw/common/Makefile.common (upload): removed obsolete target

fw/common/Makefile.common

@@ -38,6 +38,10 @@ endif
 
 all:		$(MAIN).bin
 
+
+# ----- automatic build version information -----------------------------------
+
+
 version version.h:
 		@if [ -f .version ]; then \
 		    v=`cat .version`; \
@@ -54,6 +58,10 @@ version version.h:
 
 version.rel:	version
 
+
+# ----- build rules -----------------------------------------------------------
+
+
 $(MAIN).ihx:	$(OBJS:%=%.rel)
 		$(GEN) $(CC_normal) $(CFLAGS) $(LDFLAGS) $(OBJS:%=%.rel)
 
@@ -67,6 +75,10 @@ $(MAIN).ihx:	$(OBJS:%=%.rel)
 .c.rel:
 		$(CC) $(CFLAGS) -c $<
 
+
+# ----- dependencies ----------------------------------------------------------
+
+
 # below, set dummy UART speed to make dependencies build without error
 
 depend .depend:	
@@ -82,14 +94,32 @@ ifeq (.depend,$(wildcard .depend))
 include .depend
 endif
 
+
+# ----- specific object files -------------------------------------------------
+
+
+boot.rel:	$(F32XBASE)/fw/boot/boot.c
+		$(CC) $(CFLAGS) -o $@ -c $<
+
+usb.rel:	$(F32XBASE)/fw/common/usb.c
+		$(CC) $(CFLAGS) -o $@ -c $<
+
+dfu.rel:	$(F32XBASE)/fw/boot/dfu.c
+		$(CC) $(CFLAGS) -o $@ -c $<
+
+
+# ----- clean -----------------------------------------------------------------
+
+
 clean:
 		rm -f $(OBJS:%=%.rel)
 		rm -f $(OBJS:%=%.asm) $(OBJS:%=%.lst)
 		rm -f $(OBJS:%=%.rst) $(OBJS:%=%.sym)
 		rm -f $(MAIN).ihx $(MAIN).lnk $(MAIN).map $(MAIN).mem
 
+
+# ----- spotless --------------------------------------------------------------
+
+
 spotless:	clean
 		rm -f $(MAIN).bin .depend
-
-upload:
-		ssh lab neo 'cat \>$(MAIN).bin' <$(MAIN).bin